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USN-4484-1 Not scored

linux-hwe, linux-aws-5.3, linux-gke-5.3, linux-raspi2-5.3 vulnerability

It was discovered that the cgroup v2 subsystem in the Linux kernel did not properly perform reference counting in some situations, leading to a NULL pointer dereference. A local attacker could use this to cause a denial of service or possibly gain administrative privileges.

Exploit probability Not scored
Published September 2, 2020
Required by Not available
Last source change June 3, 2026

02 / AFFECTED SOFTWARE

Affected packages

Ubuntu:18.04:LTS linux-aws-5.3

8 explicit affected versions

Ubuntu:18.04:LTS linux-gke-5.3

11 explicit affected versions

Ubuntu:18.04:LTS linux-hwe

33 explicit affected versions

Ubuntu:18.04:LTS linux-raspi2-5.3

10 explicit affected versions

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities USN-4484-1

It was discovered that the cgroup v2 subsystem in the Linux kernel did not properly perform reference counting in some situations, leading to a NULL pointer dereference. A local attacker could use this to cause a denial of service or possibly gain administrative privileges.

View original source

05 / REFERENCES

Further evidence